畜禽脂肪代谢的相关研究进展

通过论述畜禽体内脂肪的相关代谢分析及各项调控的影响因素，简要介绍畜禽脂肪代谢的相关研究进展。     

明清畿辅地区水稻种植中环境与技术的颉颃

在以农为本的帝制时期,天、地、人"三才"理论一直是中国传统农业生产的基本指导思想,而"三才"理论的核心即是环境与技术。本文中,笔者以明清时期畿辅地区的种稻活动为例,来分析生态环境与农业技术之间的博弈关系。笔者认为,畿辅地区的水土环境、光照与气温制约着南方水田技术在此地的应用,畿辅地区恶劣的生态环境亦影响着水田技术在该区的扎根与传承;南来稻作技术在对北方旱地进行适应的同时,亦在一定程度上改变了畿辅某些地区的局地环境。在二者的颉颃中,占主导地位的是环境对技术的制约,农业技术必须以尊重环境为前提。     

环境不确定性、多元化经营与权益资本成本

以2009~2012年我国A股上市公司为研究样本，检验环境不确定性及多元化经营对公司权益资本成本的影响。研究发现，环境不确定性越高则公司的权益资本成本也越高，同时在高环境不确定性背景下，多元化经营将有助于缓解环境不确定性与权益资本成本之间的正相关关系；进一步，对于政府控制公司，多元化经营能够更显著地降低环境不确定性所导致的代理问题，并且若其所处地区政府干预程度较低，则多元化经营缓解环境不确定性与权益资本成本之间正相关关系的作用越大。     

发展循环农业模式实现经济与环境双赢

发展循环农业模式是农业可持续发展的有效途径，介绍了6种循环农业发展模式，简要阐述了每种模式的操作过程和经济效益，提出发展循环农业模式是今后农业发展的必经之路，应从技术开发和保障措施方面给予支持，以使生态循环农业得到广泛推广。     

Emission of ESBL/AmpC-producing Escherichia coli from pig fattening farms to surrounding areas

The presence of ESBL/AmpC-producing Escherichia coli in livestock such as pigs has been known for some time. However, to date there is little information about the transmission of these resistant bacteria between pig farms and their surroundings. Thus, the aim of this study was to explore this topic by investigating seven German pig fattening farms. Samples from outside (including ground surfaces, ambient air, slurry and digestate from biogas plants) and, in parallel, from inside the pig barns (including pig feces, dust, barn air, flies and mice feces) were examined for ESBL/AmpC-producing E. coli and selected isolates were compared by pulsed-field gel electrophoresis (PFGE) analysis. 14/17 (82.4%) slurry samples and three of four samples of digestate from biogas plants tested positive for ESBL/AmpC-producing E. coli. In the vicinity of the pig barns these resistant bacteria were detected in 14/87 (16.1%) boot swabs taken from various ground surfaces and in 2/36 (6%) ambient air samples. Inside the pig barns, 6/63 (9.5%) barn air samples and a small proportion of flies and mice feces samples were ESBL/AmpC-positive. PFGE analysis proved fecal emission as well as a possible spread via flies, as identical ESBL-E. coli isolates were detected in slurry and on fertilized fields, as well as in flies and pooled feces from inside the barn and slurry. Contaminated slurry presented the major emission source for ESBL/AmpC-producing E. coli in the pig fattening farms, but a spread via the airborne route or via different vectors also seems possible.     

运用现代科技手段,提高资源利用能力遏制内蒙古生态环境的恶化趋势

文章系统的阐明了科技在提高资源利用能力方面的作用。在资源合理开发利用的同时 ,加大现有植被的保护、恢复和建设力度 ,改善生态环境 ,遏制环境的恶化趋势 ,为经济发展创造条件 ,使资源优势尽快转变为经济优势。     

木材保护设备机组设计与环境保护

本文论述了木材保护设备机组设计与环境保护的关系。     

发展城市林业改善城市环境

发展城市林业是改善城市环境，促进城市可持续发展的必然选择。论述城市林业的生态、社会、经济效益，探讨城市林业发展中应该注意的问题。     

森林旅游中非生态旅游行为及行为守则研究

通过分析森林旅游中旅游者、旅游管理者和政府的许多非生态旅游行为和这些行为对自然环境及旅游行为本身的影响 ,提出了三者的生态行为守则框架 ,旨在为制订森林旅游区生态旅游管理办法提供借鉴。     

论环境会计与传统会计的关系

随着社会的发展，会计正向新的领域不断拓展和渗透。本介绍了新生会计之一的环境会计。并说明了它与传统会计的关系。